\ProvidesFile{ustcthesis-bachelor.bbx}[2021/01/19 v1.0 USTCThesis biblatex
  bibliography style]

\RequireBibliographyStyle{gb7714-2015}

\ExecuteBibliographyOptions{
  gbnamefmt = lowercase,
  gbtype    = false,
  gbpub     = false,
  gbalign   = left,
}

\DeclareFieldFormat{journaltitle}{%
  \iffieldequalstr{userd}{english}{%
    \mkbibemph{#1}%
  }{%
    #1\isdot
  }%
}
